#include <iostream>
using std::cout;
using std::endl;
//类有时候也称呼为自定义数据类型
class Student{
    //成员函数
    void hobby(){
        cout << "爱好,,,,," << endl;
    }

    //数据成员
    int age;
};



void test(){
    Student s1;
    Student s2;
    int number1 = 10;
    int number2;
}

int main()
{
    test();
    return 0;
}

